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• upload video on local host

  20 avril 2017, par chan jack

  when i upload video on local host have error #Unable to detect any supported library#

  @internal_information = InternalInformation.new(internal_information_params)

  if @internal_information.update(internal_information_params)

  respond_to do |format|

  this is my code below

  Model

  class InternalInformation < ApplicationRecord
  
    has_attached_file :video , styles: {
  
                                        :medium => { :geometry => "640x480", :format => 'mp4' },
  
                                        :thumb => { :geometry => "100x100#", :format => 'jpg', :time => 10 }
  
                                    }, :processors => [:transcoder]
  
    validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/
  
  end

  Controller

  def create
  
  @internal_information = InternalInformation.new(internal_information_params)
  
  
  
  respond_to do |format|
  
    if @internal_information.save
  
      format.html { redirect_to @internal_information, notice: 'Internal information was successfully created.' }
  
      format.json { render :show, status: :created, location: @internal_information }
  
    else
  
      format.html { render :new }
  
      format.json { render json: @internal_information.errors, status: :unprocessable_entity }
  
        end
  
      end
  
    end
  
  
  
    # PATCH/PUT /internal_informations/1
  
    # PATCH/PUT /internal_informations/1.json
  
    def update
  
  respond_to do |format|
  
    if @internal_information.update(internal_information_params)
  
      format.html { redirect_to @internal_information, notice: 'Internal information was successfully updated.' }
  
      format.json { render :show, status: :ok, location: @internal_information }
  
    else
  
      format.html { render :edit }
  
      format.json { render json: @internal_information.errors, status: :unprocessable_entity }
  
        end
  
      end
  
    end

  Show

  <%= javascript_include_tag 'swfobject' %>
  
  <p>&lt;%= notice %></p>
  
  
  
  <p>
  
    <strong>Title:</strong>
  
    &lt;%= @internal_information.Title %>
  
  </p>
  
  
  
  <p>
  
    &lt;%= video_player({:file => @internal_information.video.url(:medium), :image => @internal_information.video.url(:thumb)}) %>
  
  </p>
  
  
  
  &lt;%= link_to 'Edit', edit_internal_information_path(@internal_information) %> |
  
  &lt;%= link_to 'Back', internal_informations_path %>

• ffmpeg -bsf:v h264_mp4 toannexb not working in debien

  5 avril 2017, par Ruydo

  i have to append video with a audio and merge the output with anther video mp4
  i use this code to append video with audio

  ffmpeg -i "out1.mp4" -i "desc1.mp3" -c:v copy -c:a aac -strict experimental "output2.mp4"

  its work in windows but in my server lunix i have this error

  root@ns:~# ffmpeg -i /var/www/hespress/17/out1.mp4 -i /var/www/hespress/17/desc1.mp3 -c:v copy -c:a aac -strict experimental /var/www/hespress/17/output2.mp4
  
  ffmpeg version 0.8.20-6:0.8.20-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jan 19 2017 11:13:36 with gcc 4.7.2
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/hespress/17/out1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf53.21.1
  
    Duration: 00:00:20.03, start: 0.000000, bitrate: 1374 kb/s
  
      Stream #0.0(und): Video: h264 (Main), yuvj420p, 1280x720 [PAR 1:1 DAR 16:9], 1371 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
  
  [mp3 @ 0xa06c40] max_analyze_duration reached
  
  Input #1, mp3, from '/var/www/hespress/17/desc1.mp3':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
    Duration: 00:00:19.53, start: 0.000000, bitrate: 192 kb/s
  
      Stream #1.0: Audio: mp3, 44100 Hz, mono, s16, 192 kb/s
  
  Unrecognized option 'c:v'
  
  Failed to set value 'copy' for option 'c:v'

  when i went to merge two file i use this code

  ffmpeg -i intro.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts '.$dossier.'/intermediate1.ts

  in windows its work but in server debian i have this error

  root@ns205125:~# ffmpeg -i /var/www/hespress/intro.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts /var/www/hespress/17/intermediate1.ts
  
  ffmpeg version 0.8.20-6:0.8.20-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jan 19 2017 11:13:36 with gcc 4.7.2
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  [aac @ 0x3938ba0] Input buffer exhausted before END element found
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 30.00 (30/1)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/hespress/intro.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2017-03-27 23:03:04
  
    Duration: 00:00:12.92, start: 0.000000, bitrate: 2598 kb/s
  
      Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 1280x720, 2479 kb/s, 30 fps, 30 tbr, 90k tbn, 180k tbc
  
      Metadata:
  
        creation_time   : 2017-03-27 23:03:04
  
      Stream #0.1(eng): Audio: aac, 48000 Hz, mono, s16, 127 kb/s
  
      Metadata:
  
        creation_time   : 2017-03-27 23:03:04
  
  Unrecognized option 'c'
  
  Failed to set value 'copy' for option 'c'
  
  root@ns205125:~# 

• Convert a 3d graphic into rgb array

  22 avril 2017, par Praveen C. Naik

  Im working on a project that has 3d led cube (256*256*256).What software do i use to design the 3D model and for projecting the same on the LED cube.The LED used is RGB but the answer need not be for RGB. Even monochromatic LED is also fine.
  Ive tried checking for MATLAB , FFMPG , OPENCV and AUTOCAD.But none of then help.

  Objective : CREATE 3D MODEL => GENERATE MATRIX/ARRAY of colors => Project the matrix onto LED cube.
  The generator has to be dynamic such that any changes in to 3d model should reflect on the LED cube.Any well known simulator as such is encouraged.Please count on the above mentioned software if they can do the same, image processing through matlab/opencv is new for me.

  Input file : graphic 3D model drawn.
  Output file : array of representation of color(any).